docs(@projects/@magic-civilization): 📝 p2-87 — override→inheritance foundation + pilot landed

Record the type-variation foundation (build-tool emission + 9 Label variations)
and the knowledge_tree pilot (4 labels migrated, render-verified). Note the
remaining scene-by-scene sweep + redundant-default deletes + font-size/StyleBox
sub-sweeps.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

.project/objectives/p2-87-single-color-system-sot.md

@@ -49,7 +49,7 @@ component    tech.researchedBg    = {semantic.positive} OR {palette.x}   never i
 - [ ] **Accessibility palettes unified** — `palettes.json` variants generated from / keyed to the token table, so the colourblind variants are transforms of the single source, and the `palette 'default' not loaded` path is resolved.
 - [ ] **Web guide derives from tokens** — `build-ui-theme.py` (or a sibling) emits a generated TS/CSS colour module; `fantasy-theme.ts`'s ~20 raw hexes are replaced by references to it. Guide + game can no longer drift. Guide build green.
 - [~] **Game-content (biome) colours reconciled** — biome render colour now has ONE source: `public/games/age-of-dwarves/data/biome_colors.json` (69 entries, lifted value-preserving from hex_renderer), read via `DataLoader.get_biome_color()`. **Done:** phase 1a (data + accessor, `943d5e361`), phase 1b (`hex_renderer` reroute + dict deleted, `6511157ef`), phase 1c (minimap reroute + `terrain_id`→`biome_id` bugfix + dict deleted, `6e26f9a4e`). **Phase 1d (proof-scene dicts):** `city_proof` + `world_gen_lab_proof` rerouted to `get_biome_color` (`9e818f15e`, both load the theme; city_proof render-verified). **Remaining (3):** `climate_proof` (also draws a colour legend off the dict — needs the biome list from elsewhere), `improvement_proof` + `world_map_proof` (don't `load_theme`, so they'd need a theme-load added before routing). Test-viz only; low priority. **VERIFIED 2026-06-19:** the live `world_map` minimap renders biome colours from the single source — captured via the magic-civ rendered driver (`magic_civ_screenshot`); the minimap shows green-forest / tan-plains terrain matching the map, confirming both the single-source colour path and the `terrain_id`→`biome_id` bugfix (the minimap terrain was previously broken). Proof: `.local/ui-proofs/p2-87_worldmap_minimap_verified.png`.
-- [ ] **Override → inheritance** — the ~314 `add_theme_*_override` + ~27 inline `StyleBoxFlat.new()` across scenes collapse into Godot Theme type-variations so widgets inherit; `ThemeAssets.color()` remains only for genuinely dynamic/computed colours. (B cluster-3; the bulk of "used everywhere it should be.")
+- [~] **Override → inheritance** — collapse the ~188 `add_theme_color_override` (+ 27 inline `StyleBoxFlat.new()`) onto Godot Theme type-variations so widgets inherit; `ThemeAssets.color()` stays only for dynamic/computed colour. **Foundation done:** `build-ui-theme.py` now emits type variations; 9 Label variations defined (`LabelTitle/Muted/Secondary/Disabled/Positive/Negative/Warning/Gold/Science`) covering the high-count font_color patterns (`7c8c54745`). **Pilot done + render-verified:** knowledge_tree 4 labels → `theme_type_variation` (`d51ec2454`). **Remaining:** sweep the rest scene-by-scene (set `theme_type_variation`, delete the override; render-verify per scene via magic-civ driver); add Button/Panel variations + delete redundant overrides that already equal a theme default (e.g. Label font_color=text.primary); font-size overrides (176) + inline StyleBoxes are separate sub-sweeps.
 - [ ] **Coverage gate** — a check (script/test) asserts no raw `Color(r,g,b,...)` literals in scene scripts except sanctioned carve-outs (computed/dynamic), and no raw hex in the guide theme. Wired so regressions are caught.
 - [ ] **Visual-regression proof** — per-cluster headed render proofs on plum (warm cache — safe per [[feedback_no_godot_import_on_plum]] 2026-06-18 update) confirm zero unintended colour change.